<template>
  <div>
    <!-- 面包屑导航栏 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">商品管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 警告区域 -->
      <el-alert title="添加商品信息" type="info" center show-icon> </el-alert>
      <!-- 步骤区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <!-- tabs区域 -->
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforetabLeave"
          @tab-click="tabClickb"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="CateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="arr"
                  v-for="(arr, ind) in item.attr_vals"
                  :key="ind"
                  border=""
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
                   
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="haderobj"
              :on-success='haderSuccess'
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
          <!-- 富文本编辑器 区域 -->
           <quill-editor v-model="addForm.goods_introduce"></quill-editor>
           <el-button type="primary" class="addbtn" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 预览图片对话框 -->
    <el-dialog
  title="图片预览"
  :visible.sync="previewDialogVisible"
  width="50%"
  >
   <img :src="previewImg" alt="" class="www">
</el-dialog>
  </div>
</template>

<script>
 import _ from 'lodash'
export default {
  data() {
    return {
      //进度条进度
      activeIndex: "0",
      //form表单绑定数据
      addForm: {
        //商品名称
        goods_name: "",
        //商品价格
        goods_price: 0,
        //商品重量
        goods_weight: 0,
        // 商品数量
        goods_number: 0,
        //商品分类id
        goods_cat: [],
        //图片临时路径
        pics : [],
        //商品介绍
        goods_introduce : '',
        attrs : []
      },
      //表单验证
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      //分类列表数据
      CateList: [],
      //级联选择器的配置对象
      cateProps: {
        expandTrigger: "hover",
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      //动态参数数据
      manyTableData: [],
      //静态属性数据
      onlyTableData: [],
      uploadUrl : 'http://106.54.194.45:8888/api/private/v1/upload',
       //上传图片绑定请求头
      haderobj: {Authorization : window.sessionStorage.getItem('token')},
      //临时图片的路径
      previewImg : '',
      //控制图片预览开关
      previewDialogVisible : false
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    //获取分类数据
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200)
        return this.$message.error("获取分类列表失败");
      this.CateList = res.data;
    },
    //级联选择器选中事件
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
        return;
      }
    },
    //tabs签约切换事件，若返回 false 或者返回 Promise 且被 reject，则阻止切换。
    //参数 (即将要跳转的，即将离开的)
    beforetabLeave(activeName, oldActiveName) {
      // console.log(activeName,oldActiveName);
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请选择商品分类");
        return false;
      }
    },
    //tab选中事件
    async tabClickb() {
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          { params: { sel: "many" } }
        );
        if (res.meta.status !== 200) return this.$message.error("获取参数失败");
        //将数据返回来的字符串转换成数组
        res.data.forEach((item) => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : [];
        });
        this.manyTableData = res.data;
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          { params: { sel: "only" } }
        );
        if (res.meta.status !== 200) return this.$message.error("获取参数失败");
        this.onlyTableData = res.data;
        console.log(res.data);
      }
    },
    //上传图片预览事件
    handlePreview(file) {
      //file图片临时路径
      console.log(file);
      this.previewImg  = file.url
       console.log(file);
      this.previewDialogVisible = true
      console.log(this.previewImg);

    },
    //删除图片预览事件
    handleRemove(file) {
       //flie返回要删除的临时路径 根据临时路径在pics数组中查到索引进行删除
       const filesPath = file.response.data.tmp_path
   const i =   this.addForm.pics.findIndex(x => filesPath)
      this.addForm.pics.splice(i,1)
     
    },
    //监听文件上传事件
    haderSuccess(response) {
   
       //获取到图片临时路径
        const picsInfo = {pic : response.data.tmp_path}
        this.addForm.pics.push(picsInfo)
        console.log(this.addForm.pics);
    }  ,
    //添加商品
    add() {
       this.$refs.addFormRef.validate(async valid=> {
         if(!valid) return this.$message.error('请输入完整的商品信息')
             
         //将Form表单数据进行深拷贝 跟原数据胡不受影响
         const form = _.cloneDeep(this.addForm)
         form.goods_cat = form.goods_cat.join(',')
        

         //处理动态参数
         this.manyTableData.forEach(item => {
             const newInfo = {
               attr_id : item.attr_id,
               attr_value : item.attr_vals.join(' ')
             }
             this.addForm.attrs.push(newInfo)
         })
         //处理静态属性
         this.onlyTableData.forEach(item => {
            const newInfo = {
               attr_id : item.attr_id,
               attr_value : item.attr_vals
             }
            this.addForm.attrs.push(newInfo)
         })
         form.attrs = this.addForm.attrs
          

          //发起请求添加商品
        const {data:res} = await  this.$http.post('goods' , form)
        if(res.meta.status !== 201) return this.$message.error('添加商品失败')
        this.$message.success('添加商品成功')
        //跳转到商品页面
         this.$router.push('/goods')
       })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.www {
  width: 100%;
}
.addbtn {
  margin-top: 10px;
}
</style>>
